Network & Cloud Utilities
Calculate IPv4 CIDR subnets, IP ranges, broadcast addresses, and cloud VPC network metrics.
CIDR Subnet Calculator
Free online CIDR Subnet Calculator. Calculate IPv4 subnet masks, usable host IP ranges, broadcast addresses, and cloud network metrics.
Subnet Mask & Wildcard Converter
Free online Subnet Mask and Wildcard Converter. Convert between IPv4 Subnet Masks, Cisco Wildcard Masks, and CIDR prefixes.
Port & Protocol Lookup
Free online Port & Protocol Lookup tool. Search TCP/UDP port numbers, service names, IANA assignments, and firewall protocol specifications.
IP Range to CIDR Calculator
Free online IP Range to CIDR Calculator. Convert start and end IP address ranges into minimal CIDR subnet blocks for cloud security rules.
WebRTC SDP & ICE Candidate Inspector
Free online WebRTC SDP & ICE Candidate Inspector. Parse SDP Offer/Answer sessions, deconstruct ICE candidate protocols, check DTLS setup roles, and sanitize IP logs.
W3C TraceContext & OpenTelemetry Header Studio
Free online W3C TraceContext & OpenTelemetry Header Studio. Generate, inspect, and validate traceparent, tracestate, and baggage headers for microservices.
CORS Preflight & Header Policy Decision Studio
Free online CORS Preflight & Header Policy Decision Studio. Simulate HTTP OPTIONS handshakes, test W3C Fetch rules, and export server CORS configs.